How to manage HAE in my 19-year-old son?

Question

Hello doctor,

My 19-year-old son was recently diagnosed with hereditary angioedema after years of experiencing unexplained swelling episodes. His lips, tongue, and throat swell up randomly, and it is absolutely terrifying when it happens. Last week, his throat swelled so severely that we had to rush to the ER, where he was given emergency medication.

The attacks seem to occur when he is stressed, such as during college exams or sports competitions. His grandfather apparently had similar symptoms, but nobody knew what it was at the time. The specialist prescribed an EpiPen-like device called Firazyr, but it is extremely expensive, and our insurance only covers part of the cost.

My son is also scared to live away at college because he worries about having an attack when no one around him knows how to help. Are there any preventive medications he can take daily?

We are also concerned about his younger sister; should she be tested, too? This condition is significantly affecting his quality of life, and we need better management strategies.

Please help.

Answer 1

Hello,

Welcome to icliniq.com.

I can understand how frightening and overwhelming this must feel for you and your son. Hereditary angioedema (HAE) can be life-threatening, especially when it involves the airway, but with proper management, many people are able to live full and independent lives.

The “EpiPen-like” device you mentioned, Firazyr (Icatibant), is used to treat acute attacks by blocking bradykinin, the substance responsible for swelling. However, as you have noticed, it can be very expensive. For prevention, there are both short-term and long-term treatment options available.

Traditionally, daily oral medications such as Tranexamic acid or androgens (Danazol, Stanozolol) were used, but these can cause significant side effects and are now less commonly recommended, especially in younger individuals.

Newer, more targeted therapies are often preferred. These include:

C1 esterase inhibitor (C1-INH) replacement therapy is administered by injection every few days.
Lanadelumab, a monoclonal antibody given as a subcutaneous injection every two to four weeks, has been shown to significantly reduce the frequency and severity of attacks.

The treatments can make life much more stable and predictable. It is also essential that your son always carries his emergency medication and that close friends, roommates, and college staff know what to do if he develops throat swelling.

Since HAE is an inherited condition, your younger daughter should definitely be tested, even if she has not experienced any symptoms yet, as attacks can develop later in life.

With the right preventive therapy and an individualized safety plan, many people with HAE are able to attend college, work, travel, and enjoy a normal life without constant fear. I strongly recommend discussing long-term prophylaxis with your son’s specialist, especially given the frequency and severity of his episodes.

I hope this helps you.

Please reach out if you have any further queries.

Thank you, and best wishes.